Continuous production of mineral foam from powdered magnesia-caustic involves mixing magnesium chloride solution and hydrogen peroxide-containing liquid, and contacting with powdered binder by catalytic decomposition of oxygen gas

摘要

Continuous production of mineral foams from powdered magnesia-caustic involves mixing magnesium chloride solution as mixing liquid and hydrogen peroxide-containing liquid as liquid blowing agent, contacting with powdered binder by catalytic decomposition of oxygen gas. The continuous production of mineral foams is carried out using an apparatus having unit comprising metering pump in a mixing chamber. The continuous streams of thick paste are fed by metering pump in a constant ratio of components (A,B) which is mixed and homogenization with respect to gas evolution. Continuous production of mineral foams from powdered magnesia-caustic involves mixing magnesium chloride solution as mixing liquid and hydrogen peroxide-containing liquid as liquid blowing agent, contacting with powdered binder by catalytic decomposition of oxygen gas. The powdered magnesia-caustic contains (in %mass) magnesium oxide (70-90) and iron oxide (1-3). The magnesium chloride solution contains 1-0.5 parts mass of magnesium chloride. The continuous production of mineral foams is carried out using an apparatus having unit comprising metering pump in a mixing chamber. The continuous streams of thick paste are fed by metering pump in a constant ratio of components (A,B) which is mixed and homogenization with respect to gas evolution. The liquid three-phase mineral foam is discharged from the mixing-chamber outlet. An independent claim is included for apparatus for continuous production of mineral foam.